| Technology Application |
|
|
|
|
|
Lake Change in Past 40 Years in the Southern Nagqu District of Tibet and Analysis of Its Driving Forces |
| HUANG Wei-dong1,2, LIAO Jing-juan1, SHEN Guo-zhuang1 |
1. Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
|
|
|
|
Abstract This study was based on remote sensing images and DEM of SRTM. Areas of twelve lakes in southern Nagqu district in the period of 1970-2010 were derived by visual interpretation, and levels of nine lakes in the period of 1990-2010 were calculated using lake area data and DEM. Then the change regulations of precipitation, temperature, evaporation, frozen ground, glacier and snow line in this region were analyzed. Correlation analysis between the lake area and the climate change was performed, and the causes of lake change were studied on the basis of a simple hydrological model. According to the results, all lake areas increased during the last 40 years except for Gyaring Co, and the lake area expansion notably happened during 2000-2010, with the total increased area of all 12 lakes in this decade being 743.88 km2, which accounted for about 63.95% of all the increased area in the past 40 years; in addition, the levels of the nine lakes tended to rise too. The main reasons for lake change are attributed to the melting of snow cover, glaciers and frozen grounds and the increasing of precipitation caused by climate warming in the past 45 years. Besides, the decreasing evaporation is also a reason for lake expansion.
|
| Keywords
Hough transform
synthetic aperture radar(SAR)
advanced synthetic aperture radar(ASAR) image
wake detection
|
|
|
|
Issue Date: 20 August 2012
|
|
|
[1] 陈宜瑜,陈泮勤,葛全胜,等.全球变化研究进展与展望[J].地学前缘,2002,9(1):11-18. Chen Y Y,Chen P Q,Ge Q S,et al.Global Change Research:Progress and Prospect[J].Earth Science Frontiers,2002,9(1):11-18 (in Chinese with English Abstract).
[2] 武慧智,姜琦刚,程彬.基于RS和GIS技术青藏高原湖泊动态变化研究[J].世界地质,2007,26(1):66-70. Wu H Z,Jiang Q G,Cheng B.Study of Dynamic Changes of Lakes in Qinghai-Tibet Plateau Based on Remote Sensing and GIS[J].Global Geology,2007,26(1):66-70 (in Chinese with English Abstract).
[3] 朱大岗,孟宪刚,郑达兴,等.青藏高原近25年来河流、湖泊的变迁及其影响因素[J].地质通报,2007,26(1):22-30. Zhu D G,Meng X G,Zheng D X,et al.Changes of Rivers and Lakes on the Qinghai-Tibet Plateau in the Past 25 Years and Their Influence Factors[J].Geological Bulletin of China,2007,26(1):22-30(in Chinese with English Abstract).
[4] 边多,杨志刚,李林,等.近30年来西藏那曲地区湖泊变化对气候波动的响应[J].地理学报,2006,61(5):510-518. Bian D,Yang Z G,Li L,et al.The Response of Lake Area Change to Climate Variations in North Tibetan Plateau During Last 30 Years[J].Acta Geographica Sinica,2006,61(5):510-518(in Chinese with English Abstract).
[5] 万玮,肖鹏峰,冯学智,等.近30年来青藏高原羌塘地区东南部湖泊变化遥感分析[J].湖泊科学,2010,22(6):874-881. Wan W,Xiao P F,Feng X Z,et al.Remote Sensing Analysis for Changes of Lakes in the Southeast of Qiangtang Area,Qinghai-Tibet Plateau in Recent 30 Years[J].Journal of Lake Sciences,2010,22(6):874-881(in Chinese with English Abstract).
[6] 吴艳红,朱立平,叶庆华,等.纳木错流域近30年来湖泊——冰川变化对气候的响应[J].地理学报,2007,62(3):301-311. Wu Y H,Zhu L P,Ye Q H,et al.The Response of Lake-glacier Area Change to Climate Variations in Namco Basin,Central Tibetan Plateau,During the Last Three Decades[J].Acta Geographica Sinica,2007,62(3):301-311(in Chinese with English Abstract).
[7] 边多,边巴次仁,拉巴,等.1975—2008年西藏色林错湖面变化对气候变化的响应[J].地理学报,2010,65(3):313-319. Bian D,Bian B C R,La B,et al.The Response of Water Level of Selin Co to Climate Change During 1975-2008[J].Acta Geographica Sinica,2010,65(3):313-319(in Chinese with English Abstract).
[8] 陈锋,康世昌,张拥军,等.纳木错流域冰川和湖泊变化对气候变化的响应[J].山地学报,2009,27(6):641-647. Chen F,Kang S C,Zhang Y J,et al.Glaciers and Lake Change in Response to Climate Change in the Nam Co Basin,Tibet[J].Journal of Mountain Science,2009,27(6):641-647(in Chinese with English Abstract).
[9] 类延斌,张虎才,王甡,等.青藏高原中部兹格塘错1970年来的湖面变化及原因初探[J].冰川冻土,2009,31(1):48-54. Lei Y B,Zhang H C,Wang S,et al.Change in Lake Area of Zigê Tangco on Central Tibetan Plateau Since the 1970s and its Mechanisms[J].Journal of Glaciology and Geocryology,2009,31(1):48-54(in Chinese with English Abstract).
[10] Allen R G,Pruitt W O,Wright J L,et al.A Recommendation on Standardized Surface Resistance for Hourly Calculation of Reference ETo by the FAO56 Penman-Monteith Method[J].Agricultural Water Management.2006,81(1/2):1-22.
[11] Marschalk U,Roth A,Eineder M,et al.Comparison of DEMs Derived from SRTM/X-and C-Band[C].Geoscience and Remote Sensing Symposium,2004,7:4531-4534.
[12] 张瑞江,赵福岳,方洪宾,等.青藏高原近30年现代雪线遥感调查[J].国土资源遥感,2010(s1):59-63. Zhang R J,Zhao F Y,Fang H B,et al.Remote Sensing Survey of Existing Snowlines in the Past 30 Years in Qinghai-Tibet Plateau[J].Remote Sensing for Land and Resources,2010 (s1):59-63(in Chinese with English Abstract).
[13] 张瑞江,方洪宾,赵福岳,等.青藏高原近30年来现代冰川面积的遥感调查[J].国土资源遥感,2010(s1):45-48. Zhang R J,Fang H B,Zhao F Y,et al.Remote Sensing Survey of Existing Glaciers in Qinghai-Tibet Plateau[J].Remote Sensing for Land and Resources,2010 (s1):45-48(in Chinese with English Abstract).
[14] 金会军,赵林,王绍令,等.青藏高原中、东部全新世以来多年冻土演化及寒区环境变化[J].第四纪研究,2006,26(2):198-210. Jin H J,Zhao L,Wang S L,et al.Evolution of Permafrost and Environmental Changes of Cold Regions in Eastern and Interior Qinghai- Tibetan Plateau Since the Holocene[J].Quaternary Science,2006,26(2):198-210(in Chinese with English Abstract).
[15] 王绍令,赵秀锋,郭东信,等.青藏高原冻土对气候变化的响应[J].冰川冻土,1996,18(s1):157-165. Wang S L,Zhao X F,Guo D X,et al.Response of Permafrost to Climate Change in the Qinghai-Xizang Plateau[J].Journal of Glaciology and Geocryology,1996,18(s1):157-165(in Chinese with English Abstract).
[16] 程志刚,刘晓东.未来气候变暖情形下青藏高原多年冻土分布初探[J].地域研究与开发,2008,27(6):80-85. Cheng Z G,Liu X D.A Preliminary Study of Future Permafrost Distribution on the Qinghai-Tibet Plateau Under Global Warming Conditions[J].Areal Research and Development,2008,27(6):80-85(in Chinese with English Abstract).
[17] 燕华云,贾绍风.青海湖水量平衡分析与水资源优化配置研究[J].湖泊科学,2003,15(1):35-40. Yan H Y,Jia S F.Water Balance and Water Resources Allocation of Qinghai Lake[J].Journal of Lake Sciences,2003,15(1):35-40(in Chinese with English Abstract).
[18] Qin D H,Liu S Y,Li P J.Snow Cover Distribution,Variability,and Response to Climate Change in Western China[J].Journal of Climate,2006,19(9):1820-1833.
[19] 柯长青,李培基.青藏高原积雪分布与变化特征[J].地理学报,1998,53(3):209-215. Ke C Q,Li P J.Spatial and Temporal Characteristics of Snow Cover Over the Qinghai-Xizang Plateau[J].Acta Geographica Sinica,1998,53(3):209-215(in Chinese with English Abstract).
[20] 姚檀栋,姚治君.青藏高原冰川退缩对河水径流的影响[J].自然杂志,2010,32(1):4-8. Yao T D,Yao Z J.Impacts of Glacial Reretreat on Runoff on Tibetan Plateau[J].Chinese Journal of Nature,2010,32(1):4-8(in Chinese with English Abstract). |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2012,
Vol. 24
